Updated specs are available.
Thermostat sub valve initial opening temperature (NA6)
This spec doesn't apply to the car you selected.
Not yet checked against the factory manual for your car's year. It's verified in the 1990 Mazda MX-5 Miata Workshop Manual; later manuals may differ.
≈182.3–187.7 °F (83.5–86.5°C)83.5–86.5°C
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Factory two-stage thermostat with separate main and sub valves. Visually check valve is airtight, then place thermostat and thermometer in water and heat the water. Do not apply these two-stage specifications to an aftermarket single-stage thermostat. The source prints 182–188°F; printed metric controls under the policy.
Applies to
- NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.
- Verified in: 1990 Mazda MX-5 Miata Workshop Manual
Sources (1)
View 1 source citations
Page E–8 (PDF p. 138) · Printed value & notes
Part no. 1193-10-89CPage E–8 (PDF p. 138)Printed: “Initial-opening temperature Sub : 83.5—86.5°C (182—188°F)”
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